A. Rampa et al., STRUCTURE-ACTIVITY RELATIONSHIP STUDIES IN THE FIELD OF CALCIUM-ANTAGONISTS - XANTHONE 1,4-DIHYDROPYRIDINES BEARING A 2,3-LACTONE RING, Arzneimittel-Forschung, 45-2(9), 1995, pp. 957-962
A series of xanthone 1,4-dihydropyridine derivatives bearing a 2,3-lac
tone ring and a 2-acetoxymethyl group were prepared. The compounds wer
e evaluated for inotropic, chronotropic and calcium antagonist propert
ies. The introduction of a 2,3-lactone ring improved the negative inot
ropic activity and selectivity.